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Add back Giant locks around kmem_free() call from user_ldt cleanup path

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during exit.  Apparently it isn't safe after all.  See uma_large_free().

Pointed out by:  alc
This commit is contained in:
Peter Wemm 2004-03-08 01:55:34 +00:00
parent a69d88af52
commit ec4a10ee26
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=126738
1 changed files with 2 additions and 0 deletions
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2
sys/i386/i386/vm_machdep.c
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@ -320,8 +320,10 @@ cpu_thread_clean(struct thread *td)
* XXX do we need to move the TSS off the allocated pages
* before freeing them? (not done here)
*/
mtx_lock(&Giant);
kmem_free(kernel_map, (vm_offset_t)pcb->pcb_ext,
ctob(IOPAGES + 1));
mtx_unlock(&Giant);
pcb->pcb_ext = 0;
}
}